2018 Japan–South Korea radar lock-on dispute

Naval and air incident in the Sea of Japan

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The Japanese Ministry of Defense released a video of the scene taken from the JMSDF P-1 involved.

Date

20 December 2018 (2018-12-20)

Location

in the Sea of Japan
Japan's claim:
off the coast of the Noto Peninsula^[1]
South Korea's claim:
100 km (62 mi) northeast of the Liancourt Rocks^[2]

Result

Inconclusive

Strain in Japan–South Korea relations
No resolution found, both sides agree to drop the issue

Belligerents

South Korea

Japan

Units involved

ROK Navy

ROK Coast Guard

Japan MSDF

Strength

1 destroyer

ROKS Gwanggaeto the Great

1 Coast Guard cutter

1 maritime patrol aircraft

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The estimated position

Japan–South Korea radar lock-on dispute
South Korean Navy radar lock-on incident

Japanese name

Kanji

韓国海軍レーダー照射問題

Hiragana

かんこくかいぐんレーダーしょうしゃもんだい

Transcriptions
Romanization	Kankoku kaigun rēdā shōsha mondai

Korean name

Hangul

한일해상군사분쟁

Hanja

韓日海上軍事紛爭

Transcriptions
Revised Romanization	Hanil Haesang-gunsa Bunjaeng

Video footage from the Kawasaki P-1 maritime patrol aircraft, released by the Japanese Ministry of Defense

The 2018 Japan–South Korea radar lock-on dispute is about an incident between a Japanese airplane and a South Korean warship. The aircraft was part of the Japan Maritime Self-Defense Force (JMSDF), while the vessel was part of the Republic of Korea Navy (ROKN). The event occurred on 20 December 2018, without the firing of any weapon, and was followed by a large diplomatic dispute between Japan and South Korea.

Incident

According to the Japanese government,^[3] a South Korean naval destroyer, ROKS Gwanggaeto the Great,^[4] directed its STIR-180 fire-control radar at a maritime patrol aircraft, Kawasaki P-1 belonging to the Fleet Air Wing 4 of JMSDF, which was conducting surveillance off the Noto Peninsula in the Sea of Japan on Thursday 20 December 2018 at around 3:00 p.m. (JST).^[3]^[5] According to Japan's Ministry of Defense (MOD), aiming the fire-control (FC) radar at a plane is violation of the Code for Unplanned Encounters at Sea (CUES),^[6] as a lock with the FC radar is generally considered as a hostile act one step before actual firing.^[7] The MOD further said the irradiation of the P-1 plane by the radar hit multiple times continuously over a certain period.^[4]

In contrast, the South Korean government denied Japan's claims, stating that it was not operating a STIR-180 radar (FC radar) but MW08 radar for the rescue when the Japanese airplane arrived at the site. The MW08 radar is a 3D radar for medium-range air and surface surveillance, target acquisition and tracking, capable of gun control against surface targets.^[8] MW08 can be used as an FC radar, but it is not connected with the fire-control system in the destroyer.^[9]^[10] In addition, South Korea claimed that the Japanese aircraft made a threatening "8-shape" flight continuously at a distance of 500 meters (1,600 ft) and altitude of 150 meters (490 ft) while the warship was participating in the rescue of a distressed North Korean fishing boat.^[11]

Timeline

2018

On 20 December, a fishing vessel sent out a distress signal. The South Korean coast guard and South Korean navy deployed rescue ships. The North Korean fishing boat was a small wooden boat that weighed less than 1 ton with four or five North Koreans at the time of the rescue. It was reported that one or two of the North Koreans had already died at the time of the rescue. The Korea Coast Guard and South Korean navy operated a radar to assist in the rescue.^[12] The Japanese Ministry of Defense (MOD) claimed a Kawasaki P-1 maritime patrol aircraft from Fleet Air Wing 4 of the JMSDF was irradiated several times for a few minutes by a destroyer of the Republic of Korea Navy with a FCR. The incident occurred off the Noto Peninsula within a joint fishing zone of the two countries,^[13] surrounded by Japan's exclusive economic zone,^[14]^[15] away from the disputed Liancourt Rocks. After receiving the radiation, the P-1 patrol aircraft tried repeatedly to contact the other party by radio to ascertain their intentions, but got no response from the South Korean naval ship.^[16] According to South Korea, the audio communication the Japanese P-1 patrol aircraft attempted to transmit contained severe static and thus the South Korean warship could not discern the message.^[17]
On 21 December, the Japanese Minister of Defense, Takeshi Iwaya, held a press conference to clarify the facts of the incident. While he told the reporters that the intention of the South Korean side was not clearly understood, he criticized the incident as an extremely dangerous action.^[18]^[19]
On 22 December, the Japanese MOD conducted a careful and detailed analysis of the incident, and concluded that the irradiation was from STIR-180, which is unsuitable for broad searches.^[20] Accordingly, the MOD stated that irradiation with a FCR was a very dangerous action that could lead to unexpected contingencies. Even though it had been searching for a ship in distress, it greatly endangered other ships and aircraft in the vicinity. The Code for Unplanned Encounters at Sea (CUES), which both Japan and South Korea have adopted, suggests avoiding any radar irradiation from a FCR to aim at ships and aircraft.^[20] For these reasons, Japan strongly requested South Korea prevent any recurrence of the incident.
On 22 December, South Korean Ministry of National Defense (MND) announced that they did not use the FCR (STIR-180) but it was operating an MW08 radar with the surveillance and tracking functions. The South Korean MND also claimed that there was no intent to aim it at the Japanese aircraft.^[6]^[21]
On 23 December, the South Korean MND argued that it had already explained its position to Japan and would strive harder to ensure that there would not be any "misunderstanding".^[22]
On 23 December, the Japanese Minister of Foreign Affairs, Tarō Kōno, withheld any direct criticism, and announced that he would like to ask the South Korean government to respond to the incident in order to prevent relations between Japan and South Korea deteriorating.
On 24 December, the Director-General of the Asian and Oceanian Affairs Bureau of the Japanese Ministry of Foreign Affairs, Kenji Kanasugi, visited the South Korean Ministry of Foreign Affairs to express Japan's strong regret and make a request for the prevention of the recurrence of this kind of incident. The South Korean government continuously denied the usage of STIR-180 while admitting the usage of MW08 for the rescue.^[23]^[24] After a statement of the South Korean government, Takeshi Iwaya pointed out at a press conference that the South Korean government had some misunderstandings about the incident, and published a statement by the Japanese MOD that the maritime patrol aircraft had been repeatedly irradiated with electromagnetic waves characteristic of a FCR continuously for certain periods.^[25]^[26]
On 26 December, a member of the South Korean minor progressive Justice Party accused the Japanese government, particularly the ruling Liberal Democratic Party, of "trying to antagonize South Korea by making up the allegation that the radar was pointed at the patrol plane."^[27]
On 27 December, Japan and South Korea held working-level teleconference over this issue between Mr. Hidehiro Ikematsu (Joint Staff Principal Councilor of the Japanese MOD) and Major General Kim Jeong-yoo (Operations Director of the South Korean JCS), etc.^[28] According to the informed sources of the South Korean military, Both JMSDF and ROKN proposed to bring data received by Japanese aircraft and information on radar equipped by South Korean destroyers, but they failed to meet an agreement due to security problem.^[29]^[30] According to the release of the South Korean MND, the defense authorities of the two nations "exchanged opinions regarding the truth and technical analysis to remove misunderstandings.", and agreed "to continue consultations on the matter. In case the two sides fail to settle the conflict through working-level talks, higher-level meetings could be held later"^[31]
On 28 December, the Japanese MOD released a video taken by the maritime patrol aircraft during the incident.^[7]^[16] The video shows that a crewmember asked the destroyer in English several times via three frequencies (international VHF [156.8 MHz] and emergency frequencies 121.5 MHz and 243 MHz) about the FC antenna directed at the P-1, but the destroyer stayed silent. The video also shows the gray destroyer sailing near a pair of rubber boats and a North Korean vessel.^[7] Sankei Shimbun reported that Japanese Prime Minister Abe had directed Japanese Defense Minister Takeshi Iwaya to release the video publicly, though the Defense Minister was reluctant to release the video, worrying about a possible backlash from South Korea.^[32] The South Korean MND expressed deep concerns and regrets over Japan's release of video footage related to an ongoing military radar spat just one day after two governments started a "working level conference" on 27 December, and accused Tokyo of releasing "inaccurate" facts.^[33] The South Korean MND argued that "The video material released by Japan contains only footage of the Japanese patrol plane circling above the surface of the sea and the (audio) conversation between the pilots and it cannot by common sense be regarded as objective evidence supporting the Japanese claims. There's no change to the fact that our military did not operate tracking radar on a Japanese patrol plane."

2019

On 2 January, the South Korean MND released a statement demanding an apology from Japan that the P-1 patrol aircraft was flying dangerously low over their naval destroyer.^[34]
On 4 January, Japanese Foreign Minister Taro Kono and South Korean Foreign Minister Kang Kyung-wha agreed over a phone conference to resolve the issue through "consultations between their military authorities".^[35] The South Korean MND released a video criticizing Japan for the low flying altitude of the maritime patrol aircraft. The video also claimed that the South Korean destroyer did not illuminate any tracking radar. The video mainly consists of the materials released by the Japanese MOD a week before.
On 8 January, Japanese Defense Minister Takeshi Iwaya repeatedly commented that Japan would be able to exchange radar wave records with the South Korean military to deepen discussion with South Korea.^[36]
On 14 January, Japan and South Korea held a conference at Singapore. At this conference, some of misunderstandings were explained like the communication, later found that the communication personnel in the destroyer had misheard the radio communication.^[37] Both countries suggested to analyze recorded data together, but they did not reach an agreement on major issues: about the usage of the radar and the threatening flight. The radar problem couldn't be resolved; the dissatisfaction of Japanese side about the radar was that Japan was asked to present the record of the RWR record first, not exchanging the records of both countries at the same time to avoid forgery, and the discontent of Korean side was that the Japan will show only a part of the P-1's record, excluding received frequencies,^[38] while the South Korean side was asked to disclose entire radars' specification and frequencies of the destroyer.^[39]^[40]^[41]^[42] About the matter of the threatening flight, Japan claimed "the MSDF P-1 maintained (even at its closet flight) a sufficiently safe altitude (approx.150m) and distance (approx. 500m) from the ROK destroyer" and requested South Korea for the objective evidence to support their claim, but South Korea had failed to provide such evidence and had repeatedly responded “if the subject of the threat feels threatened, it is then a threat," ^[37] while the South Korean MND claimed that "safe altitude (approx.150m) and distance (approx. 500m)" is based on ICAO applying to civil flight, not a flight made by a government. They also claimed that when flights with altitude and distance admitted by Japanese were made to Japanese ship, JMSDF would also protest. Although Japanese MOD replied that they would not protest against it,^[43] Japan did not acknowledge it as an official statement when South Korean representatives asked whether they can declare it internationally.^[44] Both Japan and South Korea promised to hold further negotiations.
On 21 January, Japanese MOD released the final statement regarding this incident including the location-relationship-diagram and the sound file of the radar reception(also known as RWR records). Japanese MOD also pointed out that this sound file evidence(RWR records) was rejected to be examined by the South Korean MND at the time of working-level consultations held on 14 January.^[37] After Japan's final statement, Choi hyon-su, official spokesperson of the South Korean MND, on the official regular briefing, stated "(from the sound records released on January.21) We couldn't interpret the sound records since we were not passed conversion logs for the records from Japan,^[45]^[46] and RWR reception record cannot exactly prove the usage of STIR-180 since various radars were used at the time, like Kelvin radar making similar frequencies, using I-band, in Sambongho, Korea Coast Guard's vessel, and MW08 that can be identified as FC radar, that could have confused P-1's ESM recorder."^[47]^[48] Japan declared there would be no more working-level consultations while the South Korean MND suggesting further joint investigations comparing each countries' data.^[49]

Fire-control Radar Detection Sound released by the Japan Ministry of Defense on January 21

The waveform of Fire-control Radar Detection Sound released by the Japan Ministry of Defense on January 21 (parts of the sound were processed for information security). This waveform shows the Pulse repetition frequency is approximately 7kHz and Conical scanning frequency is approximately 100Hz. In this incident, AN/UPX-27K IFF, STIR-180, and MW08 can make this type of waveform.

Search Radar Detection Sound released by the Japan Ministry of Defense on January 21

Waveform of Search Radar Detection Sound. This signal is clearly distinguished from Fire-control Radar signal. X-band and R-band radars equipped in the coast guard's vessel leave this type of waveform.

On 22 January, the South Korean MND released the formal statement summarizing their previous arguments explaining issues about the radar and the flight. The South Korean MND stated "The fundamental nature of this issue is the JMSDF patrol aircraft's threatening low-altitude flight towards the ROK Navy vessel that had been conducting a humanitarian rescue operation. ... We express our deepest regrets to Japan for discontinuing the working-level meetings without providing any decisive evidence. Along with the solid ROK-US Combined Defense Posture, our government will continue its efforts to strengthen security cooperation between the ROK and Japan despite the current incident."^[46]
On 23 January, according to the South Korean MND, a Japanese patrol aircraft flew at an altitude of 200–230 feet (61–70 m) within 1,800 feet (550 m) of a South Korean naval vessel on the afternoon of 23 January off Socotra Rock (Iŏdo) in the Yellow Sea, which lies some 100 miles (160 km) southeast of the South Korean island, Jeju.^[50] The South Korean military called this action a "clear provocation" that "if such activity repeats again, our military will respond strongly based on our response rules." The Japanese Defense Minister denied the allegation, saying "the altitude of the Japanese aircraft claimed by Korea, 200–230 feet (61–70 m), is not accurate, we are properly recording our flight. The Japanese aircraft was flying higher than altitude of 150 meters, following the international and domestic law.^[51] Japan Chief Cabinet Secretary Yoshihide Suga encouraged better communication between the military forces of the two countries.^[52]
On 24 January, the South Korean MND released 5 pictures taken by a camcorder and a thermal camera connected with a radar in the destroyer with recorded height and distance of the patrol plane. The South Korean MND explained that it detected the exact altitude and distance using a maritime surveillance radar.^[53]^[54] Japan stated that (regarding the photo with Japanese patrol aircraft P3C) it does not prove the altitude of the aircraft since the surface of the sea is not included in the picture.^[55]
On 25 January, the spokesperson of the South Korean MND, Choi hyon-su stated, "If Japan cannot trust our radar data that we revealed in yesterday, Japan should suggest more reliable evidence."^[56] Japan stated "We have no reason or intention to threaten Korea's destroyer. If the two approaches, our patrol aircraft is not armed and the other is the destroyer, the unarmed will feel more threatened"^[57]^[58]
On 27 January, the South Korean Minister of National Defense Jeong Kyeong-doo declared, "If we judge that Japan performed a provocative act again, we will respond strongly based on our domestic law," suggesting the use of weapons.^[59]
On 1 June, Japanese Defense Minister Takeshi Iwaya expressed his decision to end talks about the dispute to the South Korean Minister of National Defense Jeong Kyeong-doo. While both defense ministers could not reach a conclusion together, both have pledged to make to efforts to improve relations between the two countries.^[60]

2022

On 17 November 2022, the ROK Navy claimed that it had not irradiated radar.^[61]

Views and opinions

Toshio Tamogami, a retired general and ex–chief of staff of the JASDF, has given his views on Twitter denying the offensiveness of aiming FC radar.^[62] However, Toshiyuki Ito, a retired JMSDF admiral and ex-commandant of the Joint Staff College, rebutted Tamogami's view since the former had been retired for ten years and has no experience as a pilot.^[63]

The South Korean government claimed this flight of P-1 was menacing and unfriendly to the warship of a neighboring country which was operating a rescue mission in the high seas. According to the South Korean government, it was Japan and not South Korea that acted improperly in this incident and should apologize.^[64] However, Paul Giarra, a retired U.S. naval aviator and ex-senior Country Director for Japan in the Office of the ASD (ISA), pointed it out that there was absolutely no danger in the actions of the Japanese aircraft.^[65]

Some South Korean media were concerned about the friction between Seoul and Tokyo. On 7 January 2019, JoongAng Daily editorial argued that the two governments "should join forces to address the nuclear threats from North Korea and other urgent issues" and that "This emotional fighting does not help. Though what really happened at the moment has not yet been found, either side did not suffer substantial damage. Therefore, if [the South] Korean destroyer really aimed its FCR at the approaching airplane, our military authorities should apologize to Japan and wrap up the case. If the Japanese aircraft was really confused about the radar signal, it should apologize", and that "[i]t is time to take a deep breath and find a reasonable solution".^[66]

While there is no international law regulating the altitude of military flights, Japan, the U.S. military, and NATO assert they follow the custom of the International Civil Aviation Organization (ICAO) to keep a distance of 150 meters (490 ft) from vessels under normal operations.^[67]

References

^ "Regarding the incident of an ROK naval vessel directing its fire-control radar at an MSDF patrol aircraft". Archived from the original on 28 December 2018. Retrieved 2 July 2021.
^ ""한국군함, 자위대 초계기에 '사격통제 레이더' 쐈다" 일본 거센 항의". 21 December 2018.
^ ^a ^b "Regarding the incident of an ROK naval vessel directing its fire-control radar at an MSDF patrol aircraft". Ministry of Defense. 21 December 2018. Archived from the original on 11 April 2021. Retrieved 25 January 2019.
^ ^a ^b "Japan releases footage of South Korean destroyer's radar lock-on on JMSDF patrol plane". Naval Today.com. 28 December 2018. Retrieved 25 January 2019.
^ Kajimoto, Tetsushi; Shin, Hyonhee (21 December 2018). "Japan accuses South Korea of 'extremely dangerous' radar lock on plane". Reuters. Retrieved 25 January 2019.
^ ^a ^b "Regarding the incident of an ROK naval vessel directing its fire-control radar at an MSDF patrol aircraft". Ministry of Defense. 22 December 2018. Archived from the original on 11 April 2021. Retrieved 10 January 2019.
^ ^a ^b ^c "Japan shows video of alleged radar lock-on by SKorea warship". The Washington Post. 28 December 2018. Retrieved 31 December 2018.^{[dead link]}
^ Forecast International (May 2013). Radar Forecast -MW08 (PDF) (Report).
^ "[기획 한국군 무기 37] 해군 최초의 '방공구축함' 광개토대왕급". 31 May 2010.
^ "한국-일본, '초계기 레이더 조준' 진실공방 격화". mbn.mk.co.kr (in Korean). 2 January 2019. Retrieved 22 January 2019.
^ "일본 레이더 공세에 軍 영상 맞불…대치 심화되나 [박수찬의 軍]". 일본 레이더 공세에 軍 영상 맞불…대치 심화되나 [박수찬의 軍] (in Korean). 5 January 2019. Retrieved 22 January 2019.
^ 윤, 상호; 서, 영아 (22 December 2018). "[단독]해군, 동해 표류 北어선 구조… 日 "韓 레이더, 우리 초계기 조준"" [[Exclusive] Navy rescues North Korean fishing vessels drifting in the East Sea... Japan "Korean radar aims at our patrol aircraft"]. The Dong-a Ilbo. Retrieved 7 March 2021.
^ "광개토대왕함 사건은 일본의 기획도발?". The Dong-a Ilbo (in Korean). 29 December 2018. Retrieved 22 January 2019.
^ "Sea Around Us | Fisheries, Ecosystems and Biodiversity".
^ "Japan and South Korea's Unnecessary Squabble". thediplomat.com. 12 January 2019. Retrieved 23 January 2019.
^ ^a ^b "Regarding the incident of an ROK naval vessel directing its FCR at an MSDF patrol aircraft". Ministry of Defense. 28 December 2018. Archived from the original on 31 December 2018. Retrieved 3 January 2019.
^ 김, 귀근 (28 December 2018). "레이더사건 진실은?…빔 쐈는지, 위협비행했는지 놓고 韓日 팽팽". Yonhap News Agency. Retrieved 7 March 2021.
^ "Press Release: Regarding the incident of an ROK naval vessel directing its fire-control radar at an MSDF patrol aircraft". www.mod.go.jp. Japan Ministry of Defense. 21 December 2018. Archived from the original on 11 April 2021. Retrieved 22 January 2019.
^ "Japan accuses South Korea of 'extremely dangerous' radar lock on plane". Reuters. 21 December 2018. Retrieved 31 December 2018.
^ ^a ^b "Types of Radars and its Characteristics" (PDF). Ministry of Defense (Japan). 28 December 2018. Archived from the original (PDF) on 30 December 2018. Retrieved 30 December 2018.
^ "South Korea denies warship locked FCR on Japanese plane". Independent. 25 December 2018. Archived from the original on 1 May 2022. Retrieved 31 December 2018.
^ "Korea's military rejects claim of targeting Japanese patrol aircraft". The Korea Herald. 23 December 2018.
^ "네이버 뉴스".
^ "한국을 대표하는 글로벌 방송! The World on Arirang!". Archived from the original on 5 January 2019. Retrieved 5 January 2019.
^ Panda, Ankit. "Japan, South Korea in Row Over Alleged Radar-Lock Incident". The Diplomat. Retrieved 30 December 2018.
^ "Press Release: Regarding the incident of an ROK naval vessel directing its fire-control radar at an MSDF patrol aircraft". www.mod.go.jp. Japan Ministry of Defense. 25 December 2018. Archived from the original on 11 April 2021. Retrieved 22 January 2019.
^ "김종대 의원 "일본 극우층이 한국에 의식적으로 도발"" [National Assembly Member Kim Jong-Dae, "Japan's LDP Party Convicts Korea"]. Chungcheong Today (in Korean). Retrieved 30 December 2018.
^ Ministry of Defense (27 December 2018). Announcement of Japan-Republic of Korea Working-Level Meeting (Report). Archived from the original on 11 April 2021. Retrieved 2 July 2021.
^ Moonkwan Kim (29 December 2018). "Japan denied to reveal ESM recorder". The Chosun Ilbo (in Korean).
^ Makino Yoshihiro (8 January 2019). "Republic of Korea refuses to provide data Evidence of radar irradiation". Asahi Shimbun (in Japanese).
^ "S. Korea, Japan hold talks over radar strife". Yonhapnews.
^ "Video release represents Abe's political intention". The Korea Times. 30 December 2018.
^ "Korea voices 'deep concern, regrets' about Japan's footage release amid radar spat". The Korea Herald. 28 December 2018.
^ "South Korea demands apology from Japan for flight over navy warship". The Japan Times. 2 January 2019. Retrieved 3 January 2019.
^ "Top diplomats of S. Korea, Japan agree to pursue future-oriented ties amid radar spat". The Korea Herald. 3 January 2019.
^ "Japan ready to exchange radar records with South Korea over maritime lock-on incident". The Japan Times. 9 January 2019.
^ ^a ^b ^c MoD (21 January 2019). MOD's final statement regarding the incident of an ROK naval vessel directing its fire-control radar at an MSDF patrol aircraft (PDF) (Report). Archived from the original (PDF) on 21 January 2019. Retrieved 21 January 2019.
^ "Extended conflict between Japan and S.Korea". Financial news (in Korean). 16 January 2019.
^ "국방부 "日, 광개토함 전체 레이더정보 요구…대단히 무례"". 15 January 2019.
^ "S. Korea, Japan Fail to Narrow Differences on Radar Incident". world.kbs.co.kr. Retrieved 22 January 2019.
^ "Japan, S.Korea remain split over radar incident". NHK WORLD. NHK. 15 January 2019. Archived from the original on 15 January 2019. Retrieved 22 January 2019.
^ Makino Yoshihiro; Shinichi Fuziwara (15 January 2019). "Korea "Japan is rude and non-gentleman" conflict in negotiations over radar issues". The Asahi Shimbun (in Japanese).
^ Makino Yoshihiro (16 January 2019). "South Korea "If Japan fly low-flying we also" radar irradiation problem". The Asahi Shimbun (in Japanese).
^ "No resolution on the Radar spat". Yonhap News Agency. 16 January 2019. Retrieved 22 January 2019.
^ "Extended radar spat...Japan: Disclosure of the sound file vs ROK: Japanese file is not provable". Herold Economics (in Korean). 21 January 2019.
^ ^a ^b Statement of Korean MND regarding the incident about Japanese patrol plane (Report). Korean Ministry of National Defense. 22 January 2019. Archived from the original on 25 January 2019. Retrieved 25 January 2019.
^ "Japan revealed RWR record...continuous dispute between Japan and S.Korea". Yonhap News Agency (in Korean). 21 January 2019.
^ "Entire story of the incident is on the log files". Kyunghyang Shinmun (in Korean). 21 January 2019.
^ "Japan stopped negotiations. The South Korean MND expressed "Deep regret"". Seoul News (in Korean). 22 January 2019.
^ "Accusations fly between South Korea and Japan over 'threatening' maritime maneuvers". 24 January 2019.
^ P3C、「高度150メートル以上を確保」＝岩屋防衛相の会見要旨. Jiji Press. 23 January 2019. Archived from the original on 30 January 2019. Retrieved 30 January 2019.
^ Tong-Hyung, Kim (23 January 2019). "Seoul accuses Japanese patrol plane of threatening flight". The Washington Post. Archived from the original on 24 January 2019. Retrieved 25 January 2019.
^ "軍, 日 초계기 위협비행 사진 공개.."기계는 거짓말 안 해"".
^ ""machines never lie"...The pictures show show the red circle on the plane". MBC News (in Korean). 24 January 2019.
^ "S. Korean MND released images of JSDF's "threatening flight"". Sankei Shimbun News (in Japanese). 24 January 2019.
^ "MND requested more relible evidence from Japan". Yonhap News Agency (in Korean). 25 January 2019.
^ "Japan,"We are not going to reveal the data"". Yonhap News Agency (in Korean). 25 January 2019.
^ "The threatened is our patrol plane". TV Asahi (in Japanese). 25 January 2019.
^ ""日 추가 도발 시 강력 대응"…軍, 무기 가동 검토". MBC news (in Korean). 27 January 2019.
^ Tachikawa, Tomoyuki (1 June 2019). "Japan hints at ending talks about radar lock-on issue with S. Korea". Kyodo News. Retrieved 12 May 2020.
^ 韓国国防部海自哨戒機への「レーダー照射はなかった」. Yonhap News Agency (in Japanese). 17 November 2022. Archived from the original on 17 November 2022.
^ 田母神氏投稿で物議韓国照射"火器管制レーダー"の安全性 [Mr. Tamogami's controversial tweets and the safety of the FCR irradiated by South Korea]. Nikkan Gendai (in Japanese). 27 December 2018. Retrieved 8 January 2019.
^ レーダー照射は「危険ではない」元海将が田母神俊雄氏の発言を全否定 [Former admiral refuted Mr. Tamogami's statement about the risk of Korean radar irradiation]. Tokyo Sports (in Japanese). 7 January 2019.
^ "Korea continues to demand Japan's apology over radar row". The Korea Herald. 2 January 2019.
^ ""No dangerous movement on the Japanese side" US experts analyzed videos". TV Asahi (in Japanese). 5 January 2019. Archived from the original on 3 February 2019.
^ "Time to end this spat with Japan (KOR)". JoongAngDaily. 7 January 2019.
^ 韓国国防省、写真5枚を公開「威嚇飛行」日本は否定. Asahi Press (in Japanese). 24 January 2019.